"L-com's unique all female splitter for modular cables is a convenient choice when you need to combine modular cables together. Each adapter features a compact plastic design with three female jacks. Adapters are available with RJ11, RJ12, or RJ45 connectors allowing the right fit for your application. These adapters are perfect for adding an extra phone jack for a fax machine or modem. Telephone monitoring systems or test applications can benefit from a simple method to tap into an existing system cable."